Swirrl/grafter — pull request #8 by Robsteranium (2014-11-11 11:38:18+00:00)
Title: Open txt file

Changes to `open-tabular-file` to handle csv files with the "txt" extension.

Minor changes to `open-all-datasets` tests so they don't depend upon file ordering.

Note that csv files with txt extensions won't be opened by `open-all-datasets`.